It turns out the issue also exists in the latest mainline kernel!
The fix "x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE" is there, but a later patch "x86/mm: Fix slow_virt_to_phys() to handle large PAT bit" (https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=34437e67a6727885bdf6cbfd8441b1ac43a1ee65) actually removed the fix unintentionally, so we have the regression...
I have made a new fix and post it to LKML just now (<email address hidden> was Cc-ed): http://marc.info/?l=linux-kernel&m=145638841908383&w=2
It turns out the issue also exists in the latest mainline kernel!
The fix "x86, pageattr: Prevent overflow in slow_virt_to_phys() for X86_PAE" is there, but a later patch "x86/mm: Fix slow_virt_to_phys() to handle large PAT bit" /git.kernel. org/cgit/ linux/kernel/ git/torvalds/ linux.git/ commit/ ?id=34437e67a67 27885bdf6cbfd84 41b1ac43a1ee65)
(https:/
actually removed the fix unintentionally, so we have the regression...
I have made a new fix and post it to LKML just now (<email address hidden> was Cc-ed): marc.info/ ?l=linux- kernel& m=1456388419083 83&w=2
http://